Underframe for railway-cars.



B. D. LOCKWOOD. UNDERFRAME FOR RAILWAY CARS.

APPLICATIQN FILED DEC. 7. 191|.

Patented ct. 26, 1915..

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@Ui tu 'zoom B. D. LOCKWOGD.

UNDERFRANIE FOR RAILWAY CARS.

APPLICATION FILED Dec. 7. I 9 I I 1,1UI I Patented' Oct. 26, 1915.

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-B. D. LOCMWOOD.

UNDERFRAME FOR RAILWAY CARS.

APPLICATION FILED DEC. 7, i911.

Patented 00h 26, 1915.

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of railwayl cars, and especially to under-` EUENS E. ECJKWOOD, OE BELLEVUE, PENNSYLVANIA, ASSIGNGR T0 PRESSED STEEL i CEE CMPNY, 0E PTTSBUELGH, PENNSYLVANIA, A CORPORATION DE NEW`Il'ERSEY.

"UNlDEElEEAlVIE FDE EALWAY-CAES- Mamet.,

Specication of Letters Patent.

Patented oet. ae, mit.

. Application iled December 7, 1911. Serial No. 664,321. i

No. 4:44 Dawson avenue, Bellevue, in the county of Allegheny and State of Pennsylvania, have invented Certain new and useful lmprovements in Underframesfor Railway-I Gars, of which the following is a specication.

ll/fy invention relates to the underframes frames that are constructed wholly or partly of metal and has for its object to overcome certain objectionable features existing in such underframes as now commonly constructed.-

ln the construction of underframes of this type, especially where the center sill is made of and-beam, either rolled or built up of commercial sections, and the draft-sills are made of cast metal, the weakest place in these elements is at the point where one or the other is intersected by the body-bolster.

ln order to accommodate said body-bolster, y

the vertical web, land sometimes the lower Harige of the center sill and the draft sills are cut-away to permit them to arch over the same. '.lrhis displacement of the metal of the center sill or the draft sill of necessity weakens that particular portion of the underframe, and it is'an obJect of my invention to construct the center-sill, bolster and draft sills in a novel manner, so that they may all be secured together in such a manner, that none,`r of the said members are weakened in any respect.

l lin a railway car underframe the draft and bufling gears are generally carried by the draft sills, which are connected to the center sills ofthe car, and these connections are ordinarily relied upon to resist a large proportion, if not all, of the severe draft strains and buiiing shocks to which the-car is sub` jected when in use. As a consequence the draft-beams, or their connections with the underfranie, are frequently broken or overstrained. A

Another object of my invention is to provide an underframe construction in which the draft sills are connected to the body bolstersinsuch a manner that the bolsters rigidly brace the draft beams, and constitute strong abutments to receive and trans-- `mit the draft and buqng strains and shocks. A` further object of my invention is to provide an underframe structure in which lthe draft sills are rigidly and securely attached to the body bolster in such a manner that they can readily be removed and replaced, without disturbing the bolster or removing any part of the latter.

Another object of my invention is a reduction in the number of the parts constituting my underframe, which l attain by making the draft sills in one piece, and the center bearing integral therewith.

With these and other objects in view, the present invention consists in the combination and arrangement of parts, as will be hereinafter more fully described, shown on the accompanying drawings, and particularly pointed out in the appended claims, it being understood that changes in the form, proportion, size and minor details may be made, within the scope of the claims, without departing from the spirit or sacrificing any of the advantages of the invention.

lln the accompanying drawings, in which like characters of referencedesignate corresponding parts in the various figures of the drawings, Figure lis a plan view of so much of a car underframe as is necessary to illustrate my invention. Fig. 2 is a longitudinal section on the longitudinal center line of the car underframe, on line 2 2, Eig. l. Fig. 3 is an enlarged horizontal sectional view on line. 3-3 of Eig. 2, showing a method of connecting together the center sill, body bolster and draft sills. Fig. 4c is a vertical section on line i-4 of lFigs. l and 3; Eig. 5 is a vertical section on line 5--5 of Figs. l and 3; and Eig. 6 is a' vertical section on line 6--6 of Figs. l and 3. liig. 'l'

l shows a modication of my invention, one

the body bolster ofthe underframe, each lof which is provided with side bearing devices of any preferred form. The outer ends of these bolster members are provided `with flanges 6, 6 to which the side sills 7, 7 are secured. The inner ends of the webs of the bolster, z'. e., those nearest to the longitudinal center line of the car, have their web portions offset at 8, and at the point 9, where they contact with the end of the draft sill, assume an angle of about forty-five degrees, whence they continue backward as at 10 toward the longitudinal center of the car in the plane parallel to and in contact with the web of the center sill to which they are secured in any suitable manner. ylhe webs of the bolster members 5, 5 are further provided with anges 11, 11 at their lower edges to which the tension angles 4, v

of the center-sill are secured and with similar flanges 12, 12 at their upper edges to which the angles 3, 3 are secured, the tieplate 33 being in turn secured to the angles 3, 3.

The draft sills at each end of the underframe are composed of two longitudinal members 13, 13 of channel or other suitable section for the reception of the draft gear (not shown). At the end nearest to the bolster, their web members are united by a flange le, and the upper portion 15 of the center bearing member 22, which is chambered for the reception of the king-pin and to make the member as light as possible consistent with strength. The outer end faces 16, 16 of this member, nearest to the bolster are formed at an angle of about forty-tivedegrees to correspond with the angle formed by the portions 9 of the bolster with which they contact, provision being made for bolts 1'? which are passed through both members to secure lthem together. 'llhe end of the web of the draft sill is split and is of a V form at 18, to give strength and stidness to this member at this point. The ends of the draft sill member also extend in the direction of the sides of the underframe in the form of webs 19, having flanges 2O on their upper sides to which a portion of the upper flange 35 of the bolster, and the tieplate 33, are secured. Flanges 21 are also provided on the lower sides of the webs 19, which are secured to the lower flanges 34C, 34: of the bolster members., lin Fig. 2 of the drawings, the center nismo? 'and thus obviating the necessity of removing the tie-plate 33, to withdraw the king pin through` the top of the member.

Figs. 7 to 10 inclusive of the drawings illustrate a modification of my invention, 1n which the bolts 17 shown in the other form of my invention a're dispensed with, and in which rivets 28 may be used to secure together the portions 16 of the end of the draft sill member and portions 9 of the bolster member, the construction being in other rcspects substantially the same as that shown in Figs. 1 to 6 inclusive. rlhe car underframe is provided with the usual end sills 29 and gusset plates 30 and 31, to which diagonal braces 32 are secured in each corner of the underframe to counteract deformation of the underframe due to poling or shocks or lstrains applied to the corner of the underframe or superstructure which may be applied thereto.

Having thus described my invention, what l, claim as new and desire to secureby Letters Patent is 1. An underframe for cars comprising a center sill, and a bolster having portions that lap past the end of said center sill and are secured thereto, a draft sill having ends that lap and are secured to said bolster, and a center bearing member integral with said draft sill.'

2. A n underframe for cars comprising :1 single center sill, anda bolster having end portions that lap past the end of said center sill and are secured thereto, a draft sill having ends that lap and are secured to said bolster, and a center bearing member integral with said draft sill.

3. An underframe for cars comprising a center sill and bolsters having end portions that lap past the end of said center sill and are secured thereto, draftsill members having ends at substantially right angles to their longitudinal portions, and wh1ch lap and are secured to said bolsters, the said longitudinal draft sill members being connected together by members forming the upper portions of the center bearing members, and center bearing members integral with said draft sill members.

4. in underframe for cars comprising a single center sill and holsters having end 'linearer portions that lap past the ends of said center sill Iand are secured thereto,` draft sill members having ends' at substantially right angles to their longitudinal portions,` and which lap and are secured to said bolsters, the said longitudinal draft sill members being connected together by members forming the upper portions of the center bearing.

members, and center bearing members inte.,- gral with saiddraft` sill members.

5. An underframe for cars comprising a center sill, holsters having end portions that lap past the ends of the center sill and are secured thereto, between the upper and lower edges thereof, and draft sills having ends that lap and are secured to the bolster members between the upper and lower edges thereof, and center bearing members formed integral withsaid draft sills.

6. An underframe for cars comprising a center sill, a two piece bolster member having end portions which ,meet and lap past the end of said center 4sill, and are secured thereto, a draft sill member having ends which meet and lap on said bolster, and are secured thereto, and a center bearing member integral with said draft sill member.

7. An underframe for cars, comprising a center sill, a bolster member made in halves, the inner ends of each half meeting and lapping past the end of said center sill and secured thereto, a draft sill member having ends fitting into a lli-shaped recess .formed in said' bolster member, and ends extending laterally and lapping said bolster member and secured thereto, and a center bearing .member integral with said draft sill member. v

'78. An underframe forcars, comprising a center sill, a bolster member made in halves, t. the inner ends of each half meeting and lap= ping past said center sill member and secured to the web and top and bottom flanges thereof, a draft sill member having an end fitting into a lf-shaped'recess formed in said bolster member, and ends extending laterally and lapping said bolster member and secured to the web and bottom flanges thereof, a tie plate secured to the top flangesV of the draft sill member, the bolster member and center sill, and a center bearing member integral with said draft sill member. t

9. ln an underframe for cars, a center sill, a bolster comprising a plurality of parts, each of said parts having Hanges which are secured to said center sill, draftsill members having a li-shaped end portion adapted to lit in said bolster, a 'centerwbearing member integral with said draft sill mem` bers, and bolt and rivet means for connectn ing said draft sill members and bolster.

10. ln an underframe for cars,V a center sill, a bolster comprising a plurality of members secured to said center sill, a draft sill having a converging end portion, said end portion being adapted to fit in said bolster, and means for securing said bolster and draft sill together.

-11. ln an underframe for cars, a center sill, a bolster comprising a plurality of parts secured to said center sill, a draft sill member having a lf-shaped end portion, and means for securing said end portion and bolster together.v f

12. ln an underframe for cars, a center sill, a bolster comprising a plurality of parts secured to said center sillpdraft sills having a lf-shaped portion adapted to fit in said bolster, a center bearing member integral with said draft sills andbolt means for securingsaid draft sills and bolster together.

13. An underframe for cars comprising a center sill, a bolster having portions that lap past the end of said center sill, said portions being secured to the web of said sill, a-draft sill member having a ll-shaped end portion adapted to fit in said bolster and means for securing said draft sill member and bolster together.

lll. ln a car underframe, a draft sill mem` ber' having a ll-shaped end portion, a center tion of said draft sill member and means for securing all of said members together.

15. lin a'car underframe, a bolster comprising a plurality of parts, havingV their inner end portions extended in a direction toward the transverse `center line of the underframe, acenter sill'terminating short of the longitudinal center line of the bolster and secured between the end portions of said parts, a draft sill member extending inwardly beyond the longitudinal center line of said bolster and means for vsecuring said bolster and draft sills together.'

16. lin an underframefor cars. a bolster comprising a plurality of members, a center sill terminating short of the longitudinal center line of said bolster 'and secured between said members, a draft sill member eX- tending inwardly beyond said center line, andlmeans for securing said bolster and draft sill lmembers together.

17. ln an underframe for cars, a bolster comprising a plurality of members, a single center sill terminating short of the longitudinal center line of said bolster and connected with said members, a draft sill member having laterally projecting flanges secured to the webs of said bolster members, and a l-shaped end portion extending inwardly beyond the longitudinal center line of the bolster and secured between said `:uiembers and a cover plate connecting said sill of substantially I-shape in cross section, a bolster comprising av plurality of integral -shaped members having channel shaped inner end portions secured within the e'n; of said center sill, e draft sill member having an integral V-shapecl end portion adapted to lit in said bolster and be secured to said members, and a cover plate connecting said center sill bolster members and draftv sill member.

In testimony whereof I aiix my signature in presence of two witnesses.

BURNS D. LOCKWOOD. Witnesses:

FRANK E. MILLER, LETA M. GRUNDER. 

